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Grąžtai · ANNO 1957Lithuanian manufacturer · Since 1957
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GRĄŽTAI / ANNO 1957

Stub-length straight-shank twist drills DIN 1897

AB Grąžtai -  Stub-length straight-shank twist drills DIN 1897

d - diameter;     l - flute length;     L - overall length.

  RN Ti
Cutting direction Right-hand Right-hand
Diameter, mm Ground: d=0.5–20.0 
Milled: d=2.0–10.0 
Ground: d=0.5–13.0 
Split-point: d=1.6–13.0 
Workpiece material For drilling carbon, alloy and structural steels and cast iron. For drilling hard materials, titanium and Ti-alloys, and stainless steels.

 

Diameter, mm I, mm L, mm Diameter, mm l, mm L, mm
0.50–0.52 3 20 3.80–4.25 22 55
0.55–0.60 3.5 21 4.30–4.70 24 58
0.62–0.65 4 22 4.76–5.30 26 62
0.68–0.75 4.5 23 5.40–6.00 28 66
0.78–0.85 5 24 6.10–6.70 31 70
0.88–0.95 5.5 25 6.75–7.50 34 74
0.98–1.05 6 26 7.54–8.50 37 79
1.10–1.15 7 28 8.60–9.50 40 84
1.19–1.30 8 30 9.52–10.60 43 89
1.35–1.50 9 32 10.70–11.80 47 95
1.55–1.70 10 34 11.90–13.20 51 102
1.75–1.90 11 36 13.30–14.00 54 107
1.95–2.10 12 38 14.28–15.00 56 111
2.15–2.35 13 40 15.08–16.00 58 115
2.38–2.65 14 43 16.25–16.75 60 119
2.70–3.00 16 46 17.00–18.00 62 123
3.10–3.35 18 49 18.25–19.00 64 127
3.40–3.70 20 52 19.05–20.00 66 131